Implements MongoDB the storage controller for messages.
Bases: zaqar.storage.mongodb.messages.MessageController
Bases: zaqar.storage.base.Message
Implements message resource operations using MongoDB.
Messages are scoped by project + queue.
Messages:
Name Field
-------------------------
scope -> p_q
ttl -> t
expires -> e
marker -> k
body -> b
claim -> c
client uuid -> u
transaction -> tx